CVM Overview

The cluster functionality (CVM) of the VERITAS Volume Manager allows multiple hosts to concurrently access and manage a given set of logical devices under VxVM control. A VxVM cluster is a set of hosts sharing a set of devices; each host is a node in the cluster. The nodes are connected across a network. If one node fails, other nodes can still access the devices. The VxVM cluster feature presents the same logical view of the device configurations, including changes, on all nodes.

You configure CVM shared storage after VCS sets up a cluster configuration. There must be at least one non-shared disk on each node for the creation of rootdg to initialize VxVM. See CVM Administration for extensive background information on CVM.